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TOGAPower
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Message 1 of 24
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Poor Latency Variation and Dropped Packets

on ‎28-04-2021 15:29

I have been experiencing significant latency spikes (similar to many others recently) and was wondering if somebody could please take a look for me 🙂

13c66a6e46ecc77697a08d87e378f01eb8af6413
Direct link: https://www.thinkbroadband.com/broadband/monitoring/quality/share/13c66a6e46ecc77697a08d87e378f01eb8... 

 Downstream:

 

Channel	Frequency (Hz)	Power (dBmV)	SNR (dB)	Modulation	Channel ID
1	659000000	6	37	256 qam	32
2	475000000	8	37	256 qam	9
3	483000000	8.1	37	256 qam	10
4	491000000	8	37	256 qam	11
5	499000000	7.9	37	256 qam	12
6	507000000	7.8	37	256 qam	13
7	515000000	7.6	37	256 qam	14
8	523000000	7.5	37	256 qam	15
9	531000000	7.5	37	256 qam	16
10	539000000	7.5	37	256 qam	17
11	547000000	7.4	37	256 qam	18
12	555000000	7.4	37	256 qam	19
13	563000000	7.1	37	256 qam	20
14	571000000	7	37	256 qam	21
15	579000000	6.8	37	256 qam	22
16	587000000	6.8	37	256 qam	23
17	595000000	6.4	37	256 qam	24
18	603000000	7	37	256 qam	25
19	611000000	7	37	256 qam	26
20	619000000	6.9	37	256 qam	27
21	627000000	7	37	256 qam	28
22	635000000	6.6	37	256 qam	29
23	643000000	6.5	37	256 qam	30
24	651000000	6.4	37	256 qam	31


Downstream bonded channels
Channel	Locked Status	RxMER (dB)	Pre RS Errors	Post RS Errors
1	Locked	37.3	844	0
2	Locked	37.6	87	0
3	Locked	37.6	87	0
4	Locked	37.3	115	0
5	Locked	37.6	130	0
6	Locked	37.3	135	0
7	Locked	37.6	106	0
8	Locked	37.3	181	0
9	Locked	37.6	134	0
10	Locked	37.3	135	0
11	Locked	37.3	152	0
12	Locked	37.6	152	0
13	Locked	37.6	161	0
14	Locked	37.6	172	0
15	Locked	37.6	191	0
16	Locked	37.6	189	0
17	Locked	37.6	173	0
18	Locked	37.6	196	0
19	Locked	37.3	300	0
20	Locked	37.3	322	1
21	Locked	37.6	328	0
22	Locked	37.3	435	0
23	Locked	37.3	460	0
24	Locked	37.3	580	8

 

Upstream:

 

Upstream bonded channels
Channel	Frequency (Hz)	Power (dBmV)	Symbol Rate (ksps)	Modulation	Channel ID
1	60300000	35.5	5120	64 qam	1
2	39400000	35.5	5120	64 qam	4
3	46200000	35.5	5120	64 qam	3
4	53700000	35.5	5120	64 qam	2


Upstream bonded channels
Channel	Channel Type	T1 Timeouts	T2 Timeouts	T3 Timeouts	T4 Timeouts
1	ATDMA	0	0	0	0
2	ATDMA	0	0	2	0
3	ATDMA	0	0	1	0
4	ATDMA	0	0	0	0

 

 Network Log:

 

Network Log
Time	Priority	Description
28/04/2021 07:42:49	notice	DHCP Renew - lease parameters tftp file-cmreg-vmdg505-bbt053-b.cm modified;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
28/04/2021 07:42:49	Error	DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
28/04/2021 03:35:39	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
27/04/2021 14:48:9	notice	LAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
25/04/2021 23:56:35	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
25/04/2021 18:19:45	notice	LAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
25/04/2021 18:18:21	Warning!	LAN login FAILED : Incorrect Username / Password / ConnectionType;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
25/04/2021 18:13:34	notice	DHCP Renew - lease parameters tftp file-cmreg-vmdg505-bbt053-b.cm modified;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
25/04/2021 18:13:34	Error	DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
25/04/2021 18:13:32	Error	DHCP RENEW sent - No response for IPv4;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
20/04/2021 09:28:13	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
20/04/2021 08:03:6	notice	DHCP Renew - lease parameters tftp file-cmreg-vmdg505-bbt053-b.cm modified;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
20/04/2021 08:03:6	Error	DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
13/04/2021 07:24:13	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
13/04/2021 00:53:40	notice	DHCP Renew - lease parameters tftp file-cmreg-vmdg505-bbt053-b.cm modified;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
13/04/2021 00:53:40	Error	DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
11/04/2021 16:36:55	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/04/2021 12:53:39	notice	DHCP Renew - lease parameters tftp file-cmreg-vmdg505-bbt053-b.cm modified;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/04/2021 12:53:39	Error	DHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
06/04/2021 20:35:41	critical	No Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;

 

 

Thanks in advance for the help 🙂

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TOGAPower
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Message 2 of 24
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Re: Poor Latency Variation and Dropped Packets

on ‎28-04-2021 15:33

Downstream bonded channels

Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID

1659000000637256 qam32
2475000000837256 qam9
34830000008.137256 qam10
4491000000837256 qam11
54990000007.937256 qam12
65070000007.837256 qam13
75150000007.637256 qam14
85230000007.537256 qam15
95310000007.537256 qam16
105390000007.537256 qam17
115470000007.437256 qam18
125550000007.437256 qam19
135630000007.137256 qam20
14571000000737256 qam21
155790000006.837256 qam22
165870000006.837256 qam23
175950000006.437256 qam24
18603000000737256 qam25
19611000000737256 qam26
206190000006.937256 qam27
21627000000737256 qam28
226350000006.637256 qam29
236430000006.537256 qam30
246510000006.437256 qam31



Downstream bonded channels

Channel Locked Status RxMER (dB) Pre RS Errors Post RS Errors

1Locked37.38440
2Locked37.6870
3Locked37.6870
4Locked37.31150
5Locked37.61300
6Locked37.31350
7Locked37.61060
8Locked37.31810
9Locked37.61340
10Locked37.31350
11Locked37.31520
12Locked37.61520
13Locked37.61610
14Locked37.61720
15Locked37.61910
16Locked37.61890
17Locked37.61730
18Locked37.61960
19Locked37.33000
20Locked37.33221
21Locked37.63280
22Locked37.34350
23Locked37.34600
24Locked37.35808
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TOGAPower
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Message 3 of 24
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Re: Poor Latency Variation and Dropped Packets

on ‎28-04-2021 15:34

Upstream bonded channels

Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID

16030000035.5512064 qam1
23940000035.5512064 qam4
34620000035.5512064 qam3
45370000035.5512064 qam2



Upstream bonded channels

Channel Channel Type T1 Timeouts T2 Timeouts T3 Timeouts T4 Timeouts

1ATDMA0000
2ATDMA0020
3ATDMA0010
4ATDMA0000

 

Network Log

Time Priority Description

28/04/2021 07:42:49noticeDHCP Renew - lease parameters tftp file-cmreg-vmdg505-bbt053-b.cm modified;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
28/04/2021 07:42:49ErrorDHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
28/04/2021 03:35:39criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
27/04/2021 14:48:9noticeLAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
25/04/2021 23:56:35criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
25/04/2021 18:19:45noticeLAN login Success;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
25/04/2021 18:18:21Warning!LAN login FAILED : Incorrect Username / Password / ConnectionType;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
25/04/2021 18:13:34noticeDHCP Renew - lease parameters tftp file-cmreg-vmdg505-bbt053-b.cm modified;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
25/04/2021 18:13:34ErrorDHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
25/04/2021 18:13:32ErrorDHCP RENEW sent - No response for IPv4;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
20/04/2021 09:28:13criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
20/04/2021 08:03:6noticeDHCP Renew - lease parameters tftp file-cmreg-vmdg505-bbt053-b.cm modified;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
20/04/2021 08:03:6ErrorDHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
13/04/2021 07:24:13criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
13/04/2021 00:53:40noticeDHCP Renew - lease parameters tftp file-cmreg-vmdg505-bbt053-b.cm modified;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
13/04/2021 00:53:40ErrorDHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
11/04/2021 16:36:55criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/04/2021 12:53:39noticeDHCP Renew - lease parameters tftp file-cmreg-vmdg505-bbt053-b.cm modified;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
09/04/2021 12:53:39ErrorDHCP RENEW WARNING - Field invalid in response v4 option;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
06/04/2021 20:35:41criticalNo Ranging Response received - T3 time-out;CM-MAC=**:**:**:**:**:**;CMTS-MAC=**:**:**:**:**:**;CM-QOS=1.1;CM-VER=3.0;
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Sasha_W
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Message 4 of 24
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Re: Poor Latency Variation and Dropped Packets

on ‎30-04-2021 15:37

Hi @TOGAPower, 

 

Welcome to the forum page and thanks for posting this on here. 

 

Sorry to hear you're having some latency issues but we can certainly look into getting this sorted for you. 

 

Just some questions,

 

How is your wired devices looking? Do you get these drop outs on wired connections at all? 

 

Do you also experience this on all devices or is just some? 

 

Have you carried out any checks at all? I know this does sound very basic, but have you carried out a reboot or a pin hole reset of the hub? 
 

Does it make a difference at all?

 

Please do let me know 🙂 

 

Thanks

 

Sasha - Forum Team


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TOGAPower
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Message 5 of 24
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Re: Poor Latency Variation and Dropped Packets

on ‎01-05-2021 15:40

Hi Sasha!

The dropouts are occuring while connected via ethernet to the router. It is consistent across devices, and leads to periodic dropouts and lag spikes while gaming or streaming video throughout the day. I have tried a hub reboot/reset, with no improvements 😞 Do all of the power levels look normal and correct? It has been this way since it was installed last month, so I dont believe that it is something that has developed, but rather has been this way throughout.

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Andrew-G
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Message 6 of 24
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Re: Poor Latency Variation and Dropped Packets

on ‎01-05-2021 17:12

Power levels are all within limits, though the upstream power is bouncing along very close to the lower values permitted (34-49 dBmV in my book), and the downstream data is showing a few post-RS (uncorrected) errors breaking through 

There's also something well odd about your BQM - look at the image you first posted, and then the link below.  At first glance they're very similar, but on closer examination they are different days (and it seems the link is "live").  Now look at 2am to 4am.  Near enough identical.  I can't say what is causing that, but it's extremely odd, which may or may not help.

I'm a Very Insightful Person, I'm here to share knowledge, I don't work for Virgin Media. Learn more

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risc19
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Message 7 of 24
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Re: Poor Latency Variation and Dropped Packets

on ‎01-05-2021 19:32

I'm in exactly the same boat mate.

The stats on my router also look good but the latency jumps persist.

You are not in the reading area are you?

Here is my bqm

https://www.thinkbroadband.com/broadband/monitoring/quality/share/b65c4224b5e15bd9a54c7083d40339a238...

My Broadband Ping - Virgin Lagfest Modem Mode
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TOGAPower
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Message 8 of 24
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Re: Poor Latency Variation and Dropped Packets

on ‎02-05-2021 00:33

I certainly am! My account has an area reference of 31 (in Thatcham/Newbury, which I assume is close enough to Reading to have a similar impact?)

For what it is worth, today the latency seemed to be worse:

b65c4224b5e15bd9a54c7083d40339a238837a4c

Live link:https://www.thinkbroadband.com/broadband/monitoring/quality/share/13c66a6e46ecc77697a08d87e378f01eb8... 

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risc19
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Message 9 of 24
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Re: Poor Latency Variation and Dropped Packets

on ‎02-05-2021 14:16

Yes, that is close to me, about 10 miles in a straight line.

 I wonder if the two are related as they look very similar. 

I have had no luck getting mine fixed, this has been going on for months. I thought it was lockdown related stress on the network, but as we are coming out of lockdown it has not improved.

risc19_0-1619957774560.png

 

My Broadband Ping - Virgin Lagfest Modem Mode
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David_Bn
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Message 10 of 24
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Re: Poor Latency Variation and Dropped Packets

on ‎03-05-2021 10:58

Good Morning TOGAPower,

 

Thanks for your post

 

I've been able to book an engineer to look into this for you - there are currently no outages or network congestion issues being advised in the local area.

 

Please log into your self-care account to see when the visit is due to take place an feel free to re-arrange this if you wish 

 

Kindest regards,

 

David_Bn

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